(!) (#1 6EM7 SINGLE) 6EM7 GE Canada black plates NOS 1960's (3.3ma/53ma)
6EA7 GE USA black base rebranded Zenith 1960 used/good (3.6ma/35ma)
6EM7 Raytheon Canada black bass NOS 1960's (2.1ma/45ma)
6EM7 RCA black base like new slightly tilted glass 1960's (3.5ma/41ma)
6EM7 RCA coin-base black plates NOS 1970's broken guide pin (2.4ma/50ma)
6EM7 RCA coin-base black plates used/good 1970's (2.6ma/63ma)
6EM7 RCA coin-base used (2.5ma/28ma)
6EM7 Shield by Sylvania NOS 1960's (1.3ma/62ma)
6EM7 Sylvania coin-base NOS 1970's (1.0ma/42ma)
6EM7 Sylvania coin-base NOS 1970's (1.4/70ma)
6EM7 Westinghouse Korea NOS 1981 (1.2ma/65ma)
